the latest polling shows mixed results. the pew poll has romney up by four. gallup's daily tracking has the president up by five. what does that mean? >> yeah, first of all, you know, you always take one poll in isolation or even two can be problematic. the best thing always on these is to look there's a few sites that do polling averages, real clear politics, "huffington post," they average all the different polls and put them together. if you want to look at these two right now, they might kind of both be true and it's because of this. the gallup one measures seven days. it's still got a number of predebate days there when oen was ahead. it's got the immediate post debate when romney seems to have pulled even or taken the lead in the two or three days immediately after. >> immediately after. >> what gallup also showed apparently in the last day that's included in the seven days, there was ho movement back towards obama. there was an end to the movement toward romney. so that's why he went from three ahead in the seven-day track yesterday to five ahead in th